3 files changed, 82 insertions, 1 deletions

diff --git a/include/sysemu/cpu-throttle.h b/include/sysemu/cpu-throttle.h
new file mode 100644
index 0000000000..d65bdef6d0
--- /dev/null
+++ b/include/sysemu/cpu-throttle.h
@@ -0,0 +1,68 @@
+/*
+ * Copyright (c) 2012 SUSE LINUX Products GmbH
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see
+ * <http://www.gnu.org/licenses/gpl-2.0.html>
+ */
+
+#ifndef SYSEMU_CPU_THROTTLE_H
+#define SYSEMU_CPU_THROTTLE_H
+
+#include "qemu/timer.h"
+
+/**
+ * cpu_throttle_init:
+ *
+ * Initialize the CPU throttling API.
+ */
+void cpu_throttle_init(void);
+
+/**
+ * cpu_throttle_set:
+ * @new_throttle_pct: Percent of sleep time. Valid range is 1 to 99.
+ *
+ * Throttles all vcpus by forcing them to sleep for the given percentage of
+ * time. A throttle_percentage of 25 corresponds to a 75% duty cycle roughly.
+ * (example: 10ms sleep for every 30ms awake).
+ *
+ * cpu_throttle_set can be called as needed to adjust new_throttle_pct.
+ * Once the throttling starts, it will remain in effect until cpu_throttle_stop
+ * is called.
+ */
+void cpu_throttle_set(int new_throttle_pct);
+
+/**
+ * cpu_throttle_stop:
+ *
+ * Stops the vcpu throttling started by cpu_throttle_set.
+ */
+void cpu_throttle_stop(void);
+
+/**
+ * cpu_throttle_active:
+ *
+ * Returns: %true if the vcpus are currently being throttled, %false otherwise.
+ */
+bool cpu_throttle_active(void);
+
+/**
+ * cpu_throttle_get_percentage:
+ *
+ * Returns the vcpu throttle percentage. See cpu_throttle_set for details.
+ *
+ * Returns: The throttle percentage in range 1 to 99.
+ */
+int cpu_throttle_get_percentage(void);
+
+#endif /* SYSEMU_CPU_THROTTLE_H */
diff --git a/include/sysemu/hvf.h b/include/sysemu/hvf.h
index 5214ed5202..6d3ee4fdb7 100644
--- a/include/sysemu/hvf.h
+++ b/include/sysemu/hvf.h
@@ -28,8 +28,8 @@ int hvf_vcpu_exec(CPUState *);
 void hvf_cpu_synchronize_state(CPUState *);
 void hvf_cpu_synchronize_post_reset(CPUState *);
 void hvf_cpu_synchronize_post_init(CPUState *);
+void hvf_cpu_synchronize_pre_loadvm(CPUState *);
 void hvf_vcpu_destroy(CPUState *);
-void hvf_reset_vcpu(CPUState *);
 
 #define TYPE_HVF_ACCEL ACCEL_CLASS_NAME("hvf")
 
diff --git a/include/sysemu/hw_accel.h b/include/sysemu/hw_accel.h
index 0ec2372477..e128f8b06b 100644
--- a/include/sysemu/hw_accel.h
+++ b/include/sysemu/hw_accel.h
@@ -14,6 +14,7 @@
 #include "hw/core/cpu.h"
 #include "sysemu/hax.h"
 #include "sysemu/kvm.h"
+#include "sysemu/hvf.h"
 #include "sysemu/whpx.h"
 
 static inline void cpu_synchronize_state(CPUState *cpu)
@@ -24,6 +25,9 @@ static inline void cpu_synchronize_state(CPUState *cpu)
     if (hax_enabled()) {
         hax_cpu_synchronize_state(cpu);
     }
+    if (hvf_enabled()) {
+        hvf_cpu_synchronize_state(cpu);
+    }
     if (whpx_enabled()) {
         whpx_cpu_synchronize_state(cpu);
     }
@@ -37,6 +41,9 @@ static inline void cpu_synchronize_post_reset(CPUState *cpu)
     if (hax_enabled()) {
         hax_cpu_synchronize_post_reset(cpu);
     }
+    if (hvf_enabled()) {
+        hvf_cpu_synchronize_post_reset(cpu);
+    }
     if (whpx_enabled()) {
         whpx_cpu_synchronize_post_reset(cpu);
     }
@@ -50,6 +57,9 @@ static inline void cpu_synchronize_post_init(CPUState *cpu)
     if (hax_enabled()) {
         hax_cpu_synchronize_post_init(cpu);
     }
+    if (hvf_enabled()) {
+        hvf_cpu_synchronize_post_init(cpu);
+    }
     if (whpx_enabled()) {
         whpx_cpu_synchronize_post_init(cpu);
     }
@@ -63,6 +73,9 @@ static inline void cpu_synchronize_pre_loadvm(CPUState *cpu)
     if (hax_enabled()) {
         hax_cpu_synchronize_pre_loadvm(cpu);
     }
+    if (hvf_enabled()) {
+        hvf_cpu_synchronize_pre_loadvm(cpu);
+    }
     if (whpx_enabled()) {
         whpx_cpu_synchronize_pre_loadvm(cpu);
     }